Final answer:
Turner syndrome is a genetic condition characterized by only one sex chromosome in females, resulting in various physical and reproductive abnormalities. It is the most common genotype found in aborted fetuses. Estrogen replacement therapy can help develop secondary sex characteristics and prevent osteoporosis in individuals with Turner syndrome.
Step-by-step explanation:
Turner syndrome, also known as XO syndrome, is a condition characterized by the presence of only one sex chromosome, typically an X chromosome, in females. This results in individuals with short stature, webbed skin in the neck region, hearing and cardiac impairments, and sterility. It is the most common genotype found in aborted fetuses. Estrogen replacement therapy can be used to develop secondary sex characteristics and prevent osteoporosis in individuals with Turner syndrome.